highway guardrail plate attractive and durable,quick installation ,an ... , zinc coating: 85um, for security project service. Galvanized Guardrail Plate Material: Zinc Thickness of coating: 3.0mm, zinc ... 40-60 um 4.0mm, zinc coating: 85um PE Painted Guardrail Plate Material: Polyester Thickness of painting: ≥ 76um Surface: ... produce according to customers' drawings and requirements highway guardrail plate